Paper-bag machine



(No'ModeL) 4 Sheets-Sheet 1.

O. W. ALLISON. PAPER BAG MACHINE.

Patented May 20, 1884.

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PAPERBAG MACHINE.

No. 298,719. Patented May 20, 1884.

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0. W. ALLISON.

PAPER BAG MACHINE.

No; 298,719; Patented May 20, 1884;

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0. W. ALLISON. PAPER BAG MACHINE.

No. 298,719. Patented May 20,1884.

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UNITED Ernrns Parent Orricn.

OSCAR WV. ALLISON, OF ROCHESTER, NEWV YORK, ASSIGNOR TO THE UNION PAPERBAG MAOHIN E COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 298,719, dated May 20,1884.

Application filed February 8, 188i.

To all whom it may concern.

Be it known that I, Osoan W. ALLISON, a citizen of the United States,residing in the city'of Rochester, county of Monroe, and State 5 of NewYork, have invented certain new and useful Improvements in Paper-BagMachines, fully described and represented in the following specificationand accompanying drawings, forming a part of the same.

This invention relates to a mechanism for the manufacture ofsatchel-bottom paper bags, and particularly to a mechanism of thegeneral construction of that shown in United States Letters Patent No.207,702, granted to me September 3, 1878.

It is the object of the present invention to effect certain improvementsin the mechanism shown in said Letters Patent, by which its constructionwill be simplified and its operation be rendered more rapid, reliable,and satisfactory.

To these ends the invention consists in va rious details of constructionand combinations of parts, all of which will be hereinafter fullyexplained, and particularly pointed outin the claims.

In the accompanying drawings, Figure l is a side elevation of amechanism embodying the present improvements. Fig. 2 is a plan view of aportion of the same. Fig. 3 is an elevation of one of the revolvingheads in which the blank is, held while the bag-bottom is formed. Fig. 4is a diagrammatic section taken upon the line w of Fig. 3. Fig. 5 is aside 5 elevation of the carrier in which the revolving heads aremounted, showing also the mutilated gear by which the heads are rotated.Figs. and 7 are respectively side and plan views of the cam for openingand locking the 0 jaws of the heads. Fig. 8 is a side View of the guidefor the movable jaw of the heads. Fig. 9 is a view of the blades forcreasing the points of the diamond. Fig. 10 is aside view of one of thecams for operating said blades. Fig. 11 is a view of one of the collarsor clips by which the creasing-blades are secured to their shaft. Fig.12 is a plan view of the blade for imparting the central fold to thebagbottom after the points of the diamond have been folded and pasted.Fig. 13 is a side view of the same. Figs. 14 and 15 are respect- (Nomodel.)

vely a plan and side elevation of the grippers for removing thecompleted. bags from the heads. Figs. 16 and 17 are respectively edgeand side views of the devices for opening and closing the grippers. Fig.18 is aside view of the apparatus for opening the tube to diamond form.Fig. 19 is plan View of the same. Figs. 20, 21, and 22 are details to behereinafter referred to. Figs. 23 to 29 are diagrams illustrating thevarious operations involved in making the bag, and Fig. 30 is a View ofthe completed bag.

In the mechanism shown in the present case, as in that shown in theLetters Patent referred to, the web of paper from which the bags are tobe made is first converted into a tube. In this operation the web 99 isled from a roll, (not shown,) and after passing around suitable guideand tension rolls, as'97, is led 7 beneath the former 98, around whichit is folded and pasted by devices (not shown) operating in the usualand well-known manner. The former 98 is made of considerable thickness,so that as the tube leaves the end of the 7 5 former its sides will beseparated some distance from each other and the paper at its edges willnot be creased or bent abruptly. As the completed tube leaves the former98 it passes between a pair of feeding-rolls, 95 96, one of which, 95,as shown, is of less length than the width of the tube, so that the tubewill pass between said rolls without having its edges creased or brokendown. As the end of the tube emerges from between the rolls 95 96 itpasses above a stationary cutting-edge,

94., and enters and passes between the jaws 92 93 of one of therevolving heads, which at that time will be advanced slightly beyond theposition shown in Fig. 1. The feeding-rolls 95 9o 96 are geared togetherin the usual manner, and are driven through gears 91 from a gear, 88,secured to the main shaft 89 of the machine. Secured to the shaft 89,just inside he frame, at each side of the machine, are a 5 pair of armsor carriers, 87, in the opposite ends of which are journaled a pair ofshafts, S5, S6, uponwhich are mounted the jaws 92 93, constituting therevolving heads in which the tubular blank is held during theformationroo of the bag-bottom. These heads, as to theirgenerallconstruction, and also the mechanism shaft, 85, the projectingends of which rest in open bearings 84, (see Fig. 8,) formed in shortarms 83, rigidly secured to the shaft 86. The shaft 85 is provided withsuitable springs, (not shown,) which tend to hold the jaw 92 snuglyagainst the jaw 93, andthe arms 87 are provided with cams 82, (see Figs.6 and 7,) which, as the head revolves, act upon the ends of the shaft85, so as to open the jaws at the proper point to receive the end of thetube, as

shown in Fig. 23. The shaft .86 is at one end provided with a gear, 81,(see Figs. 3 and 5,) which, through an intermediate, 80, engages with amutilated stationary gear, 79, so that while the jaws 92 93 are beingcarried around the shaft 89 they are also intermittently rotated aroundthe shaft 86, the gear 79 being so proportio ed that the jaws will makeexactly one revolution around the shaft 86 while being carried oncearound the shaft 89, and so mutilated that the revolution upon the shaft86 takes place near the point where the end of the tube enters the biteof the jaws.

To prevent the shaft 86 from turning in its bearings except at theproper time, the face of the gear 79 is provided with a mutilated disk,77, (see Figs. 3 and 5,) which, as soon as the gears 79 80 pass out ofengagement, is engaged by a locking projection, 78, upon the face of thegear 80, so that said gear and the shaft 86 are securely locked inposition until the re-engagement of the gears 79 80. The disk 77 andgear 79 are provided with a slot, 76, and set-screw 75, by which theycan be adjusted so as to properly time the revolutions of the head withrelation to the other parts of the apparatus.

The jaws 92 93 are each provided with alongitudinal recess, 20, (seeFigs. 3 and 4,) and a reciprocating folding-blade, 21, the purpose ofwhich will hereinafter appear. The blades 21 are located in recessesformed between the bodies of the jaws and faceplates 22, supported ashort distance therefrom, and are connected to the jaws by links 23,which permit them to have a reciprocating movement across the recesses20. The in ward movement is imparted to the blades by means of arms 24,which are pivotally attached to the blades and project beyond thejaws,so that as the arms or carriers 87 revolve they will be acted uponby stationary cams 25, (see Fig. 2,) the blades being retracted bysprings. (Not shown.) The tube having been passed between the jaws 9293, as shown in Fig. 23, the latter will be advanced and rotated untilthe ends of the shaft 85pass off the cams 82, when the springs beforereferred to will close the jaws so as to hold the tube securely betweenthem. By reason of the thickness of the former 98 and the shortness ofthe feeding-roll 95 the tube will enter between the jaws in a somewhatexpanded condition, andwith its edges uncreased, so that when the jawsclose the mouth of the tube will be caused to open, as shown in Fig. 18.As soon as the jaws have closed, the continuation of their revolutionaround the shaft 86 will carry the ends of the shaft 85 against the camprojections 74, (see Figs. 3, 6, and 7,) which will act upon the shaft,so as to hold the jaws firmly closed until the bag is completed. As thearms or carriers 87 continue to advance,the tube will be drawn downwardacross the knife-edge 94, and a bag-length will be severed therefrom.\Vhen the arms have carried the jaws to aboutthe position shown in Fig.18, the gears 79 80 will pass out of en gagement, and the disk 77 andprojection 78 will come into engagement, so as to prevent the head fromfurther revolution upon the shaft 86. At or about this time the rear plyof the partially-opened tube will be brought into position to be takenbya pair of holdingo jaws, 26 27, and its front ply by a pair of movinggrippers, 73, as shown in Fig. 24. The jaws 26 27, having taken the rearply of the tube, will hold it stationary while the grippers 73 moveforward with the front ply at a 5 a speed slightly greater than themovement of the head, so that as the head advances the tube is opened todiamond form. To accomplish this the grippers and jaws are arranged asfollows: The grippers consist of a pair of I00 jaws', 29 30, the latterof which is provided with an opening, 38, (see Figs. 20 and 21,) whichembraces a rod, 39, mounted upon standards 28 40, and of suitable formto give the grippers the proper path of travel. The jaw 30 is rigidlysecured to a rod, 31, which is pivotally connected to one of a pair ofarms,

47, extending laterally from a rock-arm, 32, extending from a transverseshaft, 33, (see Figs. 18 and 19,) the shaft 33 being provided no with asecond rock-arm, 34, which is connected by a rod, 35, with a crank, 36,upon a second transverse shaft, 37, whichreceives motion, through atrain of gears to be hereinafter mentioned, from the main shaft 89. Thejaw II 5 29 is pivoted to the jaw 30, (see Fig. 20,) and is providedwith a spring, 41, which normally holds the two jaws in a closedposition. The jaw 29 is also provided with a laterally-proj ecting lug,42, which, as the grippers are drawn rearward to receive the forward plyof the tube, comes into contact with a bar, 43, extending from thestandard 28, so as to force the jaws apart and permitthe end of thepaper to enter between them, as shown in Fig. 24. The 12 5 jaw 26 isrigidly secured to the standard 28, while the jaw 27 is pivoted to saidstandard,

and has its rearwardly-projecting end provided with a curved pivotedrod, 44, which passesthrough a bearing, 45, upon the rock- 1 0 arm 32.(See Fig. 22.) The rod 44 is provided upon its under side with a notchor a projection, 46, which, as the arm 32 is rocked forward, engageswith the edge of the bearing 45, so as to cause said arm 32 to push therod 44 forward, thereby rocking thejaw, 27 so as grasp and retain therear ply of the tube between it and the jaw 26. As the arm 32 nears theend of its forward movement the bearing 45 will be rocked out of thenotch 46, so as to release the rod 44 and permit the jaw 27 to fall awayfrom the jaw 26 and release the tube. The arm 32 is provided at itsupper end with a pair of laterally-extending arms, 47, upon which restthe free ends of a pair of rods, 48, the forward ends of which arepivoted to a pair of oscillating rods, 49, carrying at their free endsthe diamond-fold pressers 50. The rods 48 are provided with notches orwith projections 51, which, as the arm 32 is rocked forward, are engagedby the lateral arms 47, so as to move the rod 48 forward and carry thediamond-fold pressers upward againstthe faces of the jaws 92 93, asshown in Fig. 25. The movements of the parts are so timed with relationto each other that the pressers 50 are not brought against the faces ofthe jaws 92 93 until after the tube has been completely opened todiamond form. The pressers 50, coming against the faces of the jaws atthat time, serve not only to flatten the diamond and define its folds,but also to strip the end of the front point of the diamond out of thebite of the grippers 73. The bars 52, to the front ends of which therods 49 are pivoted, extend rearward above the rods 48, and at theirrear ends are provided with downward projections 53. The projections 53are so positioned that as the rods 48 are moved forward their ends willbe pressed upward in front of said projections, as shown in Fig. 1, sothat the elasticity of the parts will hold the rods in that positionuntil the jaws 92 93 have passed entirely clear of the pressers, afterwhich the rods 48 will fall of their own weight and the parts willresume their normal positions. As the completed diamond leaves thepressers 50 it will receive suitable lines of paste from the paster 54,which is of the usual construction, and is mounted upon the shaft 37,and supplied with paste from a fountainroll, 55, in the usual manner, asindicated in Fig. 1. At or about the time the first blank is receivingpaste, as just described, the sec ond pair of jaws 92 93, carried at theopposite ends of the arms 87, will arrive in position to receive theadvancing end of the tube 98, which will then be seized by those jaws,car ried downward, severed from the tube, and opened to diamond form, inthe manner just described.

The shaft 37, which, as already explained, imparts motion to the pasterand the diamondfold-forming apparatus, is provided with a gear, 56,which is connected by an interme diate, 57, with a gear, 58, upon atransverse shaft, 59, the gear 58 being in turn connected by a pair ofintermediates, (3O 61, with the gear 88 upon the main shaft. The shaft59 is provided with a pair of collars or clips, 10, (see Figs. 9 and11,) located near its opposite 1 ends, in which are pivoted the arms 11of a pair of oscillating creasing-blades, 16. The outwardly-extendingends 12 of the arms 11 are acted upon by a pair of stationary cams, 13,(see Figs. 9 and 10,) of such shape as to operate the blades at theproper times. The movement of the blades in the opposite direction iseffected by a spring, 14, to the ends of which the arms 11 are connectedby links 15. Each of the cams 13 is provided with a slot, 17, and aset-screw, by which it can be so adjustcd as to secure the proper actionof its blade. The collars 1.0 and the cams 13 will be so adjusted thatas the jaws 92 93, carrying the diamond-folded blank, pass upward pastthe shaft 59 the blades 16 will be thrown outward in succession andstrike the points of the diamond, thereby creasing said points andforcing their fold-lines into the recesses 20, as shown in Fig. 26. Tosecure the smoothest action on the part of the creasing-blades theiredges may be formed of small rolls, as shown in Fig. 9. Immediatelyafter the blades 16 have creased the diamond, so as to cause its pointsto stand outward, as indicated in Fig. 26, the outward movement of thearms87 will carry the arms 24 into engagement with the cams 25, therebyprojecting the blades 21 inward across the recesses 20 and folding thepoints of the diamond over onto its body, as indicated in Fig. 27. Bythe time the rods 24 have passed off the cams 25, so as to allow theblades 21 to retract, the jaws 92 93 will have arrived in position toco-operate with the tucking-blade 18, and at this point the ends of theshaft will pass off the shoulders 104- of the cam projections 74, so asto allow the jaws to open slightly. The blade 18 will then be advanced,so as to strike the diamond upon its center and tuck it backward intothe bite of the jaws 92 93, thereby pressing the freshlypasted andfolded points against the body of the diamond, so as to set the paste,and at the same time folding the bottom of the bagto the form shown inFigs. 28 and 30. The blade 18 is mounted to slide upon a pair ofoscillating arms, 19, extending from a rock-shaft, 62, said shaft beingprovided with a third arm, 64, the end of which carries a stud, 8, whichlies in the path of a cam, .66, secured to the face of a gear, 67, whichengages with the gear 60. The blade 18 is provided upon its under sidewith bearings 6, which permit the blade to slide freely along the arms19, and is pivotally connected by a pair of rods, 9, with a pair ofrockarms, 7, extending from a transverse shaft, 63, said shaft beingprovided with a third rockarm, 65, which is connected by a rod, 68 witha crank-pin, 69, projecting from the face of the gear 61. (See Figs. 1,2, 12, and 13.)

The various parts just described will be so timed with relation to eachother and to the the arms 87 that as the latter carry the jaws 92 93upward from the point where the arms 24 leave the cams 25 the shaft 62will be rocked so as to carry the blade 18 along with said jaws, and atthe same time the shaft 63 will be rocked so as to throw the blade 18outward along the arms 19 and cause it to enter between said jaws, asshown in Fig. 28. After the bottom of the bag has been properly folded,the shafts 62 63 will be rocked in the opposite direction, so as toretract the blade 18 and carry it back to its normal position in time toco-operate with the jaws 92 93 upon the opposite ends of the arms 87when they in turn arrive in proper position. As soon as the blade 18 hasoperated to make the cross-fold in the bag-bottom, as just described,the gears 79 80 will again come into engagement, and the jaws 92 93 willresume their revolution around the shaft 86, thereby carrying the endsof the shaft 85 into engagement with the cams 82, and causing the jaws92 93 to open. As soon as the jaws have opened sufficiently to releasethe completed bag, its projecting bottom end will be taken by theoscillating grippers 70, as shown in Fig. 29, and withdrawn from betweenthe jaws and carried into the bite of the tapes 71 72, to be deliveredfrom the machine. As the completed bag is thus withdrawn from betweenthe jaws they will arrive in position to again receive the advancing endof the tube 98, and so the operation will continue to be repeated, twoblanks being severed from the tube and two-bags completed at eachrevolution of the arms 87. The grippers 70 are carried upon 7 the end ofan arm, 100, extending from the rock-shaft 63, the movements of saidshaft already explained giving to the grippers the proper range oftravel to carry the bags from the jaws to the tapes. The grippers areoperated to seize and release the bags at the proper time, as follows:The forward jaw, 5, of the grippers (see'Figs. 14 and 15) is made rigidwith the arm 100, while the other jaw, 41:, is pivoted to said arm, andis provided with a rearwardly-extending rod, 101, to which is secured aspring, 102, the tendency of whiohis to hold the jaw 4 in a closedposition. The end of the rod 101 is bent, as shown in Fig. 14, and is sopositioned that its bent portion engages with a rigid cam projection, 3,and a pivoted cam projection, 2, upon the face of a plate, 103, (seeFigs. 16 and 17,) supported upon the shafts 62 and 63. a From thisarrangement it will be seen that as the shaft 63is rocked so as to carrythe grippers toward the jaws 92 93 the portion 1 of the rod 101 willride along the camprojection 3 and up the inclined side of the pivotedprojection 2, thereby pressing the rod 101 against the spring 102 andholding the jaws 4 5 apart. As the grippers arrive in position to takethe bag, the portion 1 of the rod 101 will pass off the upper end of theprojection 2, thereby permitting the spring 102 to expand so as to closethe grippers and seize As soon as the grippers have closed, the shaft 63will be rocked in the opposite direction, so as to draw the bag frombetween the jaws 92 93 and carry it to the tapes..

As the arm 100 is raised the portion 1 of the rod 101 will pass downwardupon the outside of the projection 2, so that the grippers will remainclosed until the bag has been carried between the tapes. When the baghas been carried well into the bite of the tapes, the portion 1 of therod 101 will again come into contact with the projection 3, so that thespring 102 will be compressed and the grippers opened. The arm 100 willcontinue its movement in the same direction until the grippers have beencarried so far forward as to pass below the tapes 72, and the portion 1of the arm 101 has passed beneath and to the rear of the projection 2.

It will be observed that as the grippers in their forward movement passbelowthe tapes 72 the bag just released from the grippers will bepermitted to pass forward without obstruction between the tapes.

What I claim is- 1. The combination, with the thick-edged former, offeed-rolls, as 95 96, one of which is cut away, so as not to break downthe edges of the tube, the revolving head which grasps the tube to carryit to the diamond-fold-forming mechanism, and mechanism operatingindependently of said head to form the diamond fold, all substantiallyas described.

2. The combination, with therevolving arms or carriers 87, of therevolving heads carried thereby, and (so-operating mechanism for formingthe diamond fold operating independently of said carriers, allsubstantially as described.

3. The combination, with the revolving arms or carriers 87, of therevolving heads carried thereby, and cooperating opening, pasting,creasing, and folding mechanism, all substantially as described.

4. The combination, with the revolving arms or carriers 87 of therevolving heads carried thereby, and cooperating opening, pasting,creasing, and folding mechanism, and mechanism for removing thecompleted bag, all substantially as described.

5. The combination, with therevolvin g arms or carriers 87 of the jaws92 93, carried thereby, and the holding-jaws and nippers, operatedindependently of said carriers, for opening the diamond fold,substantially as described.

6. The combination, with the revolving arms or carriers 87 of the jaws92 93, carried thereby, the jaws 26 27, grippers 73, and pressers 50,substantially as described.

7. The combination, with the revolving arms 87 and the revolving jaws 9293, carried thereby, of the creasing-blades 16, substantially as adescribed.

8. The combination, with the revolving arms arms or carriers 87, of therevolving heads can 12. The combination, with the revolving riedthereby, the carrying-tapes 71 72, and the arms 87, of the jaws 92 93,the tucking-blade IO oscillating grippers 70, for taking the com- 18,and the grippers 70, substantially as depleted bags from said heads anddelivering scribed. 5 them to said tapes, substantially as described.

11. The combination, with the revolving Witnesses: arms 87, of the jaws92 93 and the tucking- JOHN A. ALLIsoN, blade 18, substantially asdescribed. JOHN F. ALDEN.

OSCAR XV. ALLISON.

